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Dark Energy and Void Evolution Enik Regs Astrophysical observations and quantum physicsAstrophysical observations and quantum physicsn nExplain Explain from from quantum fluctuations quantum fluctuations in gravityin gravityn nRadiative corrections Radiative corrections induce induce n nQuantum gravity and Quantum gravity and accelerator physicsaccelerator physicsn nQuantum black holesQuantum black holes:energy spectrum,energy spectrum,dependence with dependence with parameters of space-parameters of space-times,times,e.g.e.g.stringsstrings EntropyEntropyQuantum gravity and accelerator physicsn nObtain limits from collider Obtain limits from collider experimentsexperimentsn nGraviton interference effects at Graviton interference effects at Large Hadron Collider,CERNLarge Hadron Collider,CERNn nDecay modes of particles with Decay modes of particles with mass in TeV rangemass in TeV rangen nHadron/lepton scatterings andHadron/lepton scatterings and decays in extra-dimensional decays in extra-dimensional modelsmodelsn nSuper symmetry,string theorySuper symmetry,string theoryn nLimits from cosmology Limits from cosmology and astrophysics:and astrophysics:cosmic rays and cosmic rays and supernovaesupernovaen nParticle astrophysics Particle astrophysics Dark matterDark mattermass of particles,mass of particles,Ex:Ex:Axions Axions Evidence from Evidence from observations for extra D observations for extra D Alternative to missingAlternative to missing mass problem mass problem:scale scale dependent Gdependent GCosmic rays and supernovae;Cosmic rays:Natures free collidern nSN cores emit large fluxes of KK gravitons producing a SN cores emit large fluxes of KK gravitons producing a cosmic background-radiative decays:diffuse cosmic background-radiative decays:diffuse ray ray backgroundbackgroundn nCooling limit from SN 1987A neutrino burst-bound on Cooling limit from SN 1987A neutrino burst-bound on radius of extra dimensionsradius of extra dimensionsn nCosmic neutrinos produce black holes,energy loss from Cosmic neutrinos produce black holes,energy loss from graviton mediated interactions cannot explain cosmic ray graviton mediated interactions cannot explain cosmic ray events above a limitevents above a limitn nBHs in observable collisions of elementary particles if EDBHs in observable collisions of elementary particles if EDn nCR signals from mini BHs in ED,evaporation of mini BHsCR signals from mini BHs in ED,evaporation of mini BHsGalaxy simulations and axion massn nCollisional Cold Dark Matter interaction cross Collisional Cold Dark Matter interaction cross sections sections n nHalo structure,cuspsHalo structure,cuspsn nNumber and size of extra dimensionsNumber and size of extra dimensionsHigh z SNe:evolutionary effect in distance estimators?High z SNe:evolutionary effect in distance estimators?n nMetallicity:Dependence with zn nRates of various progenitors change with age of galaxy n nMetallicity effect on C ignition densityNeutrino cooling increased by URCA Neutrino cooling increased by URCA(21-Ne-21-F)slower light curve(21-Ne-21-F)slower light curve evolution at higher evolution at higher metallicitiesmetallicities:small :small effecteffectEmpirical relation between max.luminositEmpirical relation between max.luminosity y and and light curve shape(speed)light curve shape(speed)Systematic change with metallicity Systematic change with metallicity farfar ELD SNe Ia ELD SNe Ia fainter fainter Field theories:Cosmological constant induced by quantum fluctuations in gravityn nOne loop effective potential for the curvatureOne loop effective potential for the curvature matter free Einstein gravity has 2 phases:matter free Einstein gravity has 2 phases:flat and strongly curved space times flat and strongly curved space timesn nRadiative corrections Radiative corrections Cosmological constant:Cosmological constant:00 for the curved and for the curved and 00 phase:0 phase:Graviton confinement Graviton confinement(unseccessful attempts of (unseccessful attempts of experiments)experiments)n nOr running Newton constantOr running Newton constantEffective potential as function of curvatureCasimir effect n nAttractive force between neutral plates in QEDAttractive force between neutral plates in QEDn nDepends on geometry(e.g.not parallel)Depends on geometry(e.g.not parallel)n nZero point energyZero point energyn nMetric tensor controls geometry:Metric tensor controls geometry:analogy with gravity:analogy with gravity:n nFit numerical results for gravityFit numerical results for gravityn n Energetically preferred curvaturen nMinimize effective potentialMinimize effective potentialn nQuantum phase transitionQuantum phase transition n nSavvidy vacuum:Savvidy vacuum:QCD vacuum in constant magnetic field unstable QCD vacuum in constant magnetic field unstable n n coupling(constant)depends on external B coupling(constant)depends on external B n n similarly in gravity G depends on external similarly in gravity G depends on external gravitational field gravitational field Induced and R:n nIn actionIn action F(R)=R 2 F(R)=R 2 g R g R n n stabilizes gravity stabilizes gravity n n (R (R inflation inflation,conformally invariant to conformally invariant to quintessence quintessence -cosmological evolution)-cosmological evolution)Stability and matter fieldsn n _bare -2D _bare -2D phase diagramphase diagramn n n n include matter fieldsinclude matter fields:1.1.scalar scalar2.2.strong interaction:strong interaction:3.3.influence of confinement in gauge influence of confinement in gauge andand4.4.gravitational sectors on each other gravitational sectors on each othern ngravitational waves gravitational waves 2Growth factors,0of 0.6_m+(1+_m/2)/70oenters the peculiar velocity tooo equation of state,woAlcock Paczynski effectSpherical voids in 0ocoasting period provides more time for perturbations to groworeducing the initial density contrast needed to produce nonlinear voids for fixed _0,H_0o good for T/T of CMB o density-velocity relation:model independent,including biasingFormation and evolution of voidsoIn a CDM Universe:o w1.distribution of void sizes in various simulations,2.2MASS survey,Cosmological parameters from 6dF2MASS,Aitoff projectioncz 3000 km/s3000 km/s cz 6000 km/sVoids in 2MASSn nSupergalactic coordinatesn nSupergalactic planen nEquatorial coordinatesn nPeculiar velocity datan nCosmological parameters from outflow velocitiesBig voidsn nBecause it is an infrared survey the voids are shallower less underdense than in optical Interpretation of velocitiesoNot a simple dipoleoNot a simple quadrupole (infall onto plane)Magnitude of radial velocities:variation with angle (Differential)Outflow:H_0 r 0.6/5Thank you for your attention谢谢你的阅读v知识就是财富v丰富你的人生谢谢！
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